Reports are flying in that those on AT&T with a Lumia 1020 or Lumia 1520 are receiving updates for Lumia Cyan. Those users are currently running Windows Phone 8.1 Preview for Developers. Those with the Lumia 920 on T-Mobile Germany also running Windows Phone 8.1 Preview for Developers should be able to grab Lumia Cyan without downgrading.

Microsoft's Greg Sullivan ( @gregwardo) took to Twitter to confirm the reports: